Start with your setup
Save rider and bike details. Coast-down calibration adjusts the aerodynamic and rolling-resistance parameters used by the model.
Features / Record & connect
Estimated power.
See estimated cycling power from your phone and bike setup, or connect a power meter for measured watts.
Power estimation, bike calibration, and compatible Bluetooth sensor support are part of the free core.
The essentials.
Find it in the appRide → power field · Profile → Garage → Power calibration
See estimated effort
Speed, gradient, acceleration, and available wind information contribute to estimated power. The result is a model output, not a pedal measurement.
Bring a meter if you have one
The live panel marks estimates as Power(E) and meter readings as Power(M). A compatible Bluetooth power meter can supply measured watts. Speed, cadence, and heart-rate sensors are also supported.
Understand the limits
Wind, road surface, mounting, and sensor quality affect the result. There is no validated accuracy percentage. Motor assistance cannot be separated from rider effort.
More details & considerations
Give the model a realistic setup
Rider weight, bike weight, tyres and position influence the estimate. Select the bike you are actually using. Bike profiles keep these assumptions separate, so switching equipment need not overwrite another bike's setup.
Understand the calibration fields
Bike details distinguish estimated and calibrated aerodynamic drag (CdA) and rolling resistance (Crr). Coast-down and two-pass calibration help refine the model. Follow the actual preparation instructions shown in the app.
Check where watts come from
The ride panel labels estimated watts Power(E) and measured watts Power(M). A compatible Bluetooth meter supplies measured data when available. Check the Record power meter watts setting and the live reading; pairing alone does not mean a current measurement is arriving.
See each view.
Explore actual Android app screens with example data. Open a screen for a full-size view.
The Ride screen
An earlier Ride screen during an emulator GPS replay along Reykjavik roads and cycleways. Sample ride data; see the updated recording and metric settings in this gallery.
Power calibration values
The bike's aerodynamic and rolling-resistance parameters and calibration controls.
Prepare to calibrate
The actual calibration workflow and preparation guidance. No outdoor calibration was performed in the emulator.
Power meter
Power-meter setup and the Record power meter watts setting, including the fallback to estimates.
Use a power meter when you need measured watts. Calibration and the example settings do not establish a general accuracy claim.
Get started.
Set the inputs
Review your rider profile and the active bike's weight, tyres and riding position.
Inspect calibration
Open Power calibration inside Manage bike to review the parameters and options.
Choose the source
Use estimated power or connect a compatible meter and check the recording setting.
Power estimation, bike calibration, and compatible Bluetooth sensor support are part of the free core.
Questions, answered
About estimated power.
Does this replace a power meter?
The phone model estimates power. Use a meter when you need measured watts, and interpret training results in light of the power source.
Should I recalibrate after a position change?
Bike setup advises recalibrating after changing riding position. A bike-type change also offers a choice to reset calibration or keep it for rechecking.
Join the Android beta.
Register your interest. We’ll email testing instructions when a beta place is available.